"Since you said 'stop acting like my girlfriend just because we spent one night together'"

Stella, who had harbored unrequited feelings for Dylan, her colleague, for a long time, overhears him saying to a woman in the same department, "Could you please stop acting like my girlfriend just because we spent one night together?" Stella finds herself apologizing in her heart, thinking, "Oh my gosh, I'm sorry for the misunderstanding!" The reason being that she herself had spent a passionate night with Dylan just a week ago... --- This is a standalone, single-chapter story. It's more convenient plotting than substance. Please read it lightly and quickly. I apologize in advance for any typos or errors! This will also be posted with a time delay on Alphapolis.